Cheap Flights from San Diego to Denver

Cheapest flights from San Diego to Denver

Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from San Diego to Denver. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.

Cheapest one way flight

$179

Frontier Airlines

1 layover

4h 37m

07/17/2026

The cheapest one-way flight from San Diego to Denver departs on 07/17/2026, is operated by Frontier Airlines and costs $179

Cheapest round trip flight

$294

United Airlines

Direct flight

5h 4m

12/27/2026

The cheapest roundtrip flight from San Diego to Denver departs on 12/27/2026, is operated by United Airlines and costs $294

The fastest flight

4h 37m

Fastest flight from San Diego to Denver takes 4h 37m

Direct flights

Once a week

There are direct flights on this route 1 day a week: Fr

Earliest flight

6:20 AM

Latest flight

8:01 PM

Direct flights count

37

Distance

1340km

Timezone difference

1h

The distance between San Diego and Denver is 1340km (831 miles). There are 37 direct flights from San Diego to Denver. The time difference between San Diego and Denver is 1h. Flights from San Diego begin at 6:20 AM. The latest flight from San Diego departs at 8:01 PM

Remember that on average the ideal time to book flights is 2 months before departure!

Airfare from San Diego to Denver by month

We carefully collect statistics on the search and pricing of airlines and, based on these data, we make an assumption about future prices. Thus, you can better understand which season is the cheapest to fly from San Diego to Denver

July 2026

Lowest price

on average:

$179

Avg Price

Airlines operating on route

The route San Diego — Denver is served by several airlines: Southwest Airlines and Frontier Airlines. This gives passengers more freedom in choosing flights. You can consider not only the price but also schedules, baggage policies, and onboard service. Our service compares all offers so you can find tickets from $179 and choose the most convenient option. Thanks to airline competition, you may also find promotional fares or special offers, helping you save even more. Plan your trip in advance and choose the best flights without overpaying.

Southwest Airlines

starting at $254

Frontier Airlines

starting at $179

Non-stop flights from San Diego to Denver

A non-stop flight is the most convenient and comfortable way to fly from San Diego to Denver, despite the fact that sometimes flights with transfers can cost significantly less.

San Diego — Denver

SAN — DEN

07/17/2026

Departure

Direct flight

WN1222

starting at $254

Schedule of direct flights from San Diego to Denver

There are most likely no direct flights on the San Diego — Denver route

San Diego airports overview

McClellan-Palomar Airport

•

CLD

46km

Serves Carlsbad and North County San Diego with regional commercial and general aviation flights, offering convenient access to coastal communities and business centers north of San Diego.

San Diego International Airport

•

SAN

5km

•

Denver airports overview

Centennial Airport

•

APA

1km

Denver International Airport

•

DEN

30km

•

Frequently asked questions (FAQ)

Answers to questions about the route that travelers are most interested in.

What is the cheapest price for flights from San Diego to Denver?

The cheapest flight ticket from San Diego to Denver according to data for the last 48 hours costs $179

When is the best time to buy air tickets on the route San Diego — Denver?

Often the best time to buy tickets from San Diego to Denver is 2 months before departure.

When is the cheapest time of year to fly from San Diego to Denver?

Based on statistics over the past years, the lowest prices for flights from San Diego to Denver can be found flying in these months: July.

How long does it take to fly from San Diego to Denver?

The fastest flights from San Diego to Denver start from 4 hours 37 minutes in the air.

Which airline can fly direct from San Diego to Denver?

The following airlines operate direct flights on the route San Diego — Denver: Southwest Airlines

Special offers and sales on air tickets from San Diego to Denver

We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.

We couldn't find any special offers for flights from San Diego to Denver

Alternative routes

Bakersfield ➜ Denver•Long Beach ➜ Denver•Mexicali ➜ Denver•Phoenix ➜ Denver•Santa Barbara ➜ Denver•Santa Maria ➜ Denver•Tijuana ➜ Denver•Yuma ➜ Denver•San Diego ➜ Albuquerque•San Diego ➜ Amarillo•San Diego ➜ Colorado Springs•San Diego ➜ Clovis•San Diego ➜ Fort Collins•San Diego ➜ Grand Junction•San Diego ➜ Ogden•San Diego ➜ Pueblo•San Diego ➜ Provo•San Diego ➜ Salt Lake City

•••••••••••••••••••

Cheapest one way flight

$179

Frontier Airlines

1 layover

4h 37m

07/17/2026

The cheapest one-way flight from San Diego to Denver departs on 07/17/2026, is operated by Frontier Airlines and costs $179

Cheapest round trip flight

$294

United Airlines

Direct flight

5h 4m

12/27/2026

The cheapest roundtrip flight from San Diego to Denver departs on 12/27/2026, is operated by United Airlines and costs $294

The fastest flight